US10219722B2 - MRI thermal imaging of water tissue and fat tissue using transverse relaxometry data and proton resonance frequency shift data - Google Patents

MRI thermal imaging of water tissue and fat tissue using transverse relaxometry data and proton resonance frequency shift data Download PDF

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US10219722B2
US10219722B2 US13/817,912 US201113817912A US10219722B2 US 10219722 B2 US10219722 B2 US 10219722B2 US 201113817912 A US201113817912 A US 201113817912A US 10219722 B2 US10219722 B2 US 10219722B2
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magnetic resonance
temperature
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temperature measurement
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US20130158387A1 (en
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Jukka Ilmari Tanttu
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Koninklijke Philips NV
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
    • A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
    • A61B18/24—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor with a catheter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0033—Features or image-related aspects of imaging apparatus, e.g. for MRI, optical tomography or impedance tomography apparatus; Arrangements of imaging apparatus in a room
    • A61B5/0036—Features or image-related aspects of imaging apparatus, e.g. for MRI, optical tomography or impedance tomography apparatus; Arrangements of imaging apparatus in a room including treatment, e.g., using an implantable medical device, ablating, ventilating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4836—Diagnosis combined with treatment in closed-loop systems or methods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4869—Determining body composition
    • A61B5/4872—Body fat
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4869—Determining body composition
    • A61B5/4875—Hydration status, fluid retention of the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7271—Specific aspects of physiological measurement analysis
    • A61B5/7278—Artificial waveform generation or derivation, e.g. synthesizing signals from measured signals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N7/02—Localised ultrasound hyperthermia
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/4804—Spatially selective measurement of temperature or pH
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/4828—Resolving the MR signals of different chemical species, e.g. water-fat imaging

Definitions

  • T2 and T2-star of fat have quite significant temperature dependence. This dependence offers possibilities to utilize fast T2 or T2-star dependent sequences for qualitative or quantitative temperature measurement.
  • T2-star temperature dependence of fat for qualitative or quantitative temperature mapping with T2-star weighted sequences like FFE, or field echo EPI.
  • This look-up table or function can take to account other temperature dependent factors (like magnetization or T1).
  • the temperature measurement volume contains fat tissue.
  • the memory contains a pulse sequence for controlling the operation of the magnetic resonance imaging system.
  • a pulse sequence as used herein is a set of commands or a timing diagram which is used to control the acquisition of magnetic resonance data using a magnetic resonance imaging system.
  • the pulse sequence is an inversion recovery T2 weighted turbo spin echo or an inversion recovery T2 weighted spin echo pulse sequence.
  • the pulse sequence is adapted for acquiring both transverse relaxometry data and longitudinal relaxometry data using an inversion time which is short in comparison to the T1 relaxation time.
  • the longitudinal relaxation data encompasses magnetic resonance data which contains information which should be used to infer or calculate the T1 relaxation time.
  • the T1 relaxation time referred to in this embodiment is the T1 relaxation time within the temperature measurement volume. This embodiment is advantageous because signal intensity changes due to temperature dependence of both T1 and T2 are additive which improves the sensitivity of the method.
  • FIG. 1 shows a flow diagram which illustrates a method according to an embodiment of the invention.
  • Step 100 magnetic resonance data is acquired which comprises transverse relaxometry data.
  • step 102 the temperature of a subject is calculated within a temperature volume in accordance with the transverse relaxometry data.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Otolaryngology (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Plasma & Fusion (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physiology (AREA)
  • Psychiatry (AREA)
  • Signal Processing (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
US13/817,912 2010-08-30 2011-08-26 MRI thermal imaging of water tissue and fat tissue using transverse relaxometry data and proton resonance frequency shift data Active 2035-01-21 US10219722B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP10174485A EP2423700A1 (en) 2010-08-30 2010-08-30 Apparatus, computer-implemented method, and computer program product for calculating temperature in accordance with MRI transverse relaxometry data
EP10174485.2 2010-08-30
EP10174485 2010-08-30
PCT/IB2011/053752 WO2012029006A1 (en) 2010-08-30 2011-08-26 Mri thermal imaging of water tissue and fat tissue using transverse relaxometry data and proton resonance frequency shift data

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EP (2) EP2423700A1 (https=)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11227656B1 (en) 2020-10-05 2022-01-18 International Business Machines Corporation Device for high dimensional encoding
US11244723B1 (en) 2020-10-05 2022-02-08 International Business Machines Corporation Device for high dimensional encoding

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EP2612161B1 (en) 2020-03-18
JP6076904B2 (ja) 2017-02-08
BR112013004375B1 (pt) 2021-10-13
EP2423700A1 (en) 2012-02-29
EP2612161A1 (en) 2013-07-10
CN103080764A (zh) 2013-05-01
WO2012029006A1 (en) 2012-03-08
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US20130158387A1 (en) 2013-06-20
BR112013004375A2 (pt) 2020-06-30

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